甲和乙要进行保密通信，甲采用（）加密数据文件，乙使用自己的私钥进行解密。
- A.甲的公钥
- B.甲的私钥
- C.乙的公钥
- D.乙的私钥
正确答案及解析
正确答案
解析
在公开密钥密码体制中，加密密钥（即公开密钥）是公开信息，而解密密钥（即秘密密钥）是需要保密的。加密算法和解密算法也是公开的。发送者用对方的公开密钥对明文加密后，在接收者用自己的私钥解密，即可恢复出明文，解密密钥是接收者专用的秘密密钥，对其他人都保密。
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